IXFH22N65X2 N-Channel 650V 22A MOSFET Equivalent & Substitute Parts

Part Overview

The IXFH22N65X2 is an N-Channel MOSFET manufactured by IXYS, rated for 650V drain-to-source voltage with 22A continuous drain current at 25°C. This device operates in the HiPerFET™ Ultra X2 series and is housed in a TO-247 through-hole package. The part is Active status with 5006 units in stock inventory.

Substitute parts are necessary when the primary device becomes unavailable, when design requirements demand alternative electrical characteristics within acceptable operating ranges, or when supply chain optimization requires component standardization across manufacturing facilities. Equivalent devices must maintain compatibility with circuit topology, thermal management, and gate drive requirements.

Key Parameters

Parameter	Value	Unit
Drain-to-Source Voltage (Vdss)	650	V
Continuous Drain Current (Id) @ 25°C	22	A
On-State Resistance (Rds On) @ 11A, 10V	160	mOhm
Gate Threshold Voltage (Vgs(th)) @ 1.5mA	5.5	V
Gate Charge (Qg) @ 10V	38	nC
Input Capacitance (Ciss) @ 25V	2310	pF
Power Dissipation (Max)	390	W
Operating Temperature Range	-55 to 150	°C
Package Type	TO-247-3	Through Hole
Technology	MOSFET (Metal Oxide)

Substitute Part Grouping Explanation

Substitution eligibility is determined by the following criteria applied strictly to the provided parameters:

Voltage Rating Compatibility: Substitute devices must have Vdss equal to or greater than 650V. Devices rated at 600V are acceptable only when circuit design margins permit operation below the primary device rating.

Current Rating Compatibility: Substitute devices must support continuous drain current (Id) within 80% to 110% of the primary device rating (17.6A to 24.2A). This range ensures thermal management compatibility and prevents circuit redesign.

On-State Resistance (Rds On): Substitute devices must maintain Rds On values within acceptable limits to prevent excessive power dissipation and thermal runaway. Devices with Rds On values 10% to 20% higher than the primary device are acceptable with thermal analysis verification.

Gate Charge (Qg): Gate charge values determine gate drive circuit requirements. Substitute devices with Qg values within ±50% of the primary device (19nC to 57nC) maintain compatibility with existing gate drive circuits.

Package Compatibility: All substitute devices must use TO-247 package variants (TO-247, TO-247-3, TO-247N, TO-247AC) to ensure mechanical and thermal interface compatibility.

Technology Compatibility: Both MOSFET (Metal Oxide) and SiCFET (Silicon Carbide) technologies are acceptable substitutes, provided electrical parameters remain within specified ranges.

Parameter Comparison

Parameter	IXFH22N65X2	SCT3120ALGC11	SIHG22N60E-GE3	STW24N60DM2	STW24N60M2	STW26NM60N	STW28N60M2	STW31N65M5
Manufacturer	IXYS	Rohm Semiconductor	Vishay Siliconix	STMicroelectronics	STMicroelectronics	STMicroelectronics	STMicroelectronics	STMicroelectronics
Vdss (V)	650	650	600	600	600	600	600	650
Id @ 25°C (A)	22	21	21	18	18	20	24	22
Rds On (mOhm)	160 @ 11A, 10V	156 @ 6.7A, 18V	180 @ 11A, 10V	200 @ 9A, 10V	190 @ 9A, 10V	165 @ 10A, 10V	150 @ 12A, 10V	148 @ 11A, 10V
Vgs(th) (V)	5.5 @ 1.5mA	5.6 @ 3.33mA	4.0 @ 250µA	5.0 @ 250µA	4.0 @ 250µA	4.0 @ 250µA	4.0 @ 250µA	5.0 @ 250µA
Qg (nC)	38 @ 10V	38 @ 18V	86 @ 10V	29 @ 10V	29 @ 10V	60 @ 10V	37 @ 10V	45 @ 10V
Ciss (pF)	2310 @ 25V	460 @ 500V	1920 @ 100V	1055 @ 100V	1060 @ 100V	1800 @ 50V	1370 @ 100V	816 @ 100V
Power Dissipation (W)	390	103	227	150	150	140	170	150
Operating Temperature (°C)	-55 to 150	175	-55 to 150	-55 to 150	-55 to 150	150	-55 to 150	150
Package	TO-247-3	TO-247N	TO-247AC	TO-247-3	TO-247-3	TO-247-3	TO-247-3	TO-247-3
Technology	MOSFET	SiCFET	MOSFET	MOSFET	MOSFET	MOSFET	MOSFET	MOSFET
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Inventory Status	5006 Pcs	2000 Pcs	6580 Pcs	1465 Pcs	25711 Pcs	65100 Pcs	1391 Pcs	2064 Pcs

Engineering Selection Recommendations

Primary Equivalent (Highest Compatibility): STW31N65M5 provides the closest electrical match with identical 650V Vdss rating and 22A continuous drain current. This device maintains the same voltage class and current rating as the IXFH22N65X2, minimizing circuit redesign requirements. Both devices are ROHS3 compliant and operate across the -55°C to 150°C temperature range. The STW31N65M5 features lower Rds On (148mOhm) and reduced gate charge (45nC), resulting in improved efficiency and faster switching characteristics.

Secondary Equivalent (Voltage Derating Acceptable): STW28N60M2 operates at 600V Vdss with 24A continuous drain current, providing current margin above the primary device. This device is suitable for applications where 50V voltage derating is acceptable. The STW28N60M2 exhibits superior Rds On performance (150mOhm) and maintains full temperature range operation (-55°C to 150°C). Inventory availability is limited at 1391 units.

Alternative with Enhanced Thermal Performance: STW26NM60N provides 20A continuous drain current at 600V with optimized Rds On (165mOhm). This device offers the highest inventory availability (65100 units) and maintains full temperature range operation. The 600V rating requires voltage margin verification in circuit design.

Silicon Carbide Alternative: SCT3120ALGC11 is a SiCFET technology device rated 650V with 21A continuous drain current. This device provides superior thermal performance with maximum operating temperature of 175°C and significantly reduced input capacitance (460pF). SiCFET technology requires gate drive circuit compatibility verification due to different switching characteristics compared to conventional MOSFET devices.

Not Recommended for Direct Substitution: SIHG22N60E-GE3 exhibits elevated gate charge (86nC), which is 126% above the primary device specification. This elevated gate charge may require gate drive circuit modifications and is outside the acceptable substitution range.

All substitute devices maintain ROHS3 compliance and EAR99 export classification consistent with the primary device.

Frequently Asked Questions (FAQ)

Q: Can STW24N60M2 be used as a direct replacement for IXFH22N65X2?

A: STW24N60M2 is a partial substitute with limitations. The device operates at 600V (50V below primary rating) with 18A continuous current (4A below primary rating). Substitution is acceptable only when circuit design margins accommodate the reduced voltage and current ratings. Gate charge (29nC) is within acceptable range. Thermal management must account for reduced power dissipation capability (150W vs. 390W).

Q: What is the impact of different gate charge values on circuit performance?

A: Gate charge determines the energy required to switch the device and influences gate drive circuit design. The primary device specifies 38nC at 10V. Substitute devices with gate charge values between 19nC and 57nC maintain compatibility with standard gate drive circuits. SCT3120ALGC11 (38nC at 18V) and STW31N65M5 (45nC at 10V) are within acceptable range. SIHG22N60E-GE3 (86nC) exceeds acceptable limits and requires gate drive circuit redesign.

Q: Are TO-247 package variants mechanically interchangeable?

A: TO-247, TO-247-3, TO-247N, and TO-247AC are mechanically compatible variants of the same package family. All devices mount identically on standard TO-247 footprints. Pin assignments and thermal interface characteristics are equivalent across variants. PCB layout modifications are not required for package variant substitution.

Q: What is the significance of Rds On variation among substitute devices?

A: On-state resistance directly affects power dissipation and thermal performance. The primary device specifies 160mOhm at 11A, 10V. Substitute devices with Rds On values 10% to 20% higher (176mOhm to 192mOhm) are acceptable with thermal analysis. STW31N65M5 (148mOhm) and STW28N60M2 (150mOhm) provide improved efficiency. Devices exceeding 200mOhm (STW24N60DM2 at 200mOhm) require thermal margin verification.

Q: Can 600V-rated devices replace the 650V primary device?

A: 600V-rated substitutes are acceptable when circuit design includes adequate voltage margin. Applications operating below 600V continuously may use 600V-rated devices. High-voltage transient conditions or marginal circuit designs require the full 650V rating. Devices STW24N60DM2, STW24N60M2, STW26NM60N, and STW28N60M2 operate at 600V and require voltage margin assessment.

Q: What are the advantages of SiCFET technology in SCT3120ALGC11?

A: SiCFET devices offer reduced input capacitance (460pF vs. 2310pF), enabling faster switching and reduced gate drive losses. Maximum operating temperature reaches 175°C compared to 150°C for conventional MOSFETs. SiCFET technology requires verification of gate drive circuit compatibility due to different switching behavior and potential EMI characteristics.

Q: How does inventory availability affect substitution decisions?

A: STW26NM60N offers the highest inventory (65100 units), followed by STW24N60M2 (25711 units). Limited inventory devices include STW28N60M2 (1391 units) and STW24N60DM2 (1465 units). Inventory status should be considered for long-term supply chain planning and volume production requirements.

Q: What compliance certifications are maintained across all substitute devices?

A: All substitute devices maintain ROHS3 compliance and EAR99 export classification. Moisture sensitivity level is 1 (Unlimited) for all devices. REACH status is either REACH Unaffected or Vendor Undefined. Compliance documentation is consistent with primary device specifications.

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